Spinning and torque measuring machine



July 27, 1943. A. DE RENTIIS 2,325,046

SPINNING AND TORQUE MEASURING MACHINE Filed Sept. 15, 1940 4 Sheets-Shet 1 Invenc a? Auqustu DeREn'Hie, Ely MM JG QXZM July 27, 1943.

A. DE RENTHS 2,325,046

SPINNING AND TORQUE MEASURING MACHINE 4 Sheets-Sheet 2 Filed Sept. 15, L940 Inveninr Au uefim DeREnihe AH :1 P11 eya July 27, 1943. A. DE RENTIIS 2,325,046

SPINNING AND TORQUE MEASURING MACHINE 4 Sheets-Sheet 3 Filed Sept. 13, 1940 A: 1: cirn aya July 27, 1943. A. DE RENTIIS 2,325,046

SPINNING AND TORQUE MEASURING MACHINE I Filed Sept. 13, 1940 4 Sheets-Sheet 4 Invank n1" Augusta DeREncii EJ f M Patented July 27, 1943 1 SPINNINGrAND 'nonoun nmsunmo I MACHINE1 .s q i a V s g swnei aentiis, Prospect Park, pa; Application September 13,19'40; Serial Nd356g623 zlioni'ms. (01. 265-40) 4 1 (Gra tee-under the-act ofMarcn' 3; 1882;. as; i 1 -arnemied Amaze; 19281-370LG; 757") TheIinventiondescribedherein may e manef actured land'iused-ibm' olr for; the. Government for governmental purposes, withouttheipayment to me iof, any, royalty thereio'h. n

' This invention. relates; to. the manufacture; of parts for. clockwork fuses, particularly the tirning diskiandlits friction Iregnla-tinaspring. The type, off'timing, disk, A as shownlfor instance in, UI. S;

Patent No. 139111034 isiattac'hedito acioc kwork spindle in ffrictiona {engagement therewith, the friction beingfurnished bfy,v aQcup-shaped spring washer For,setting tlie diskfislturned against the friction andfinf operation is; carried ltherebyy;

Thev magnitude andmonstancy, of 'this frictional force is importantinlthe proper functioning of afuse: and v the presentflir'rventionwis concerned withafmea'ns of"regulating the-same during manufacture,

The present inventionfrelates.to:a torque.

measuring device for checking the frictional pressureibetweenparts: otthe timing disk unit.

It istherefore an'obje'ct of this invention to provide a means for measuring the friction between fricticn-coupled units without removing them from the machine by which they are assembled.

This and other objects of the invention will appear from the following description and the accompanying drawings in which:

Figure 1 is a front elevation of the general layout of machinery including the lower portion of the spinning tool, the chuck, the torque registering device and an auxiliary motor for torque measuring purposes;

Figure 2 is a top plan View of the assembly of Figure 1;

Figure 3 is a sectional view taken along the line 33 of Figure 2;

Figure 4 is a sectional view taken along the line 44 of Figure 3; 1

Figure 5 is a top plan view of a timing disk;

Figure 6 is a section in elevation showing a modification of a part in Figure 3, and

Figure 7 is a top plan view of a detail of Figure 6.

Referring to the drawings by characters of reference, I shows generally a torque measuring device which may be any of the types of scale in common use. The spinning unit is shown generally at 2 and comprises an outer housing 3 having a bushing 4. The housing 3 and bushing 4 are movable axially of the spinning tool 5 against the pressure of a spring (not shown).

Referring to Figure 3, based on uprights 6 is a system comprising a stationary unit and two separately rotatable? unitslocatedgenerally? above,- generallybelow: the: stationary unit; 1 respectively. Included: in thee-statienarypuniti' are plate-I, ring anonterf races 9;: lflrfor. theba'lte bearings; ll, l2; and a sp'acer: ring: l3"? f'orathei Alsopfixedfi to, the: stationaryunitis the a sh ft M- of a clutch" assembly: presentlyto she'- Plate 1 is; attached toupright 1 '6:- by" 1 desc bedmeansi oi' bolts ls; andzringt?is-helditomiate "i" bymea nsof-boltslfiz Theraees 9; 'spacer5 'e retained between; shoulders: 11; I 820m ring! plate l nd;ringgflerespectively.; v

The lower: rotatable: unit:is supported by bear-- lugs 12.;

32. C-ollet 23,-engagi-ng;sleeve 22 on an extended diameter 24; is a1so -fastenedaagainst aeshoulderx 25 of sleeve'ifibymeans of "nut-25: 'liheidrumk $9 is connectedto scale I by means -of; a strap- 2?. Thus, through direct connectionsgthe scale? is responsive to rotation-ofethe collet.

Adapter 28 closes the jaws 29 of collet 23 when the downward motion of pin 30 is transmitted to adapter 28 by means of key 3|. Key 3| passesthrough slot 32 in collet 23 which slot is of sufficient length to permit free movement up and down of key 3|.

Pin 30, pivoted at 33 to piston-like end 34 of handle 35, said end being fitted in a bore 36 of a housing 31, is urged downward by action of rollers 38 acting against washer 39. Shafts 40 on housing 31 on which rollers 38 revolve are located eccentrically to the central axis of the housing 31 so that rollers 38 are brought to bear against washer 39 as the handle 35 is swung. Adjustment of rollers 38 for engagement with washer 39 is made by nuts 4|. Since rollers 38 are mounted on housing 31, theilatter is urged downward when handle 35 is swung. Stop nuts 4|, however, intercept this downward movement and a tension is transmitted through member 34 to draw pin 30 down, and hence the adapter.

The upper rotatable unit is supported on bearings II. It consists of a circular plate 42, gear 43, inner bearing race 44 and hub 45. Plate 42 is fastened to gear 43 by screws and gear 43, race 44 and hub 45 are held together by pressure of ring nut 41. Nut 41 is fastened through spanner holes 41'. Gear 43 and race 44 are held between nut 41 and flange 48 of hub 45. On plate 42 is fixed a stop 49. The end 50 of this stop is at a suitable elevation above plate 42 for intercepting the spring finger 5| of the timing disk 52.

The'upper rotatable unit can be put into motion by pinion 53 fixed to the upper portion 54 Drum l 9 together; with the inner ra'ce 2 3, is astened ag-ainst-ithesshouldera 2 l 'cl 1 a sleeve of a cone clutch. The lower portion 55 of the clutch is powered by auxiliary motor 56 and is brought into engagement with the upper portion 54 by t-readle 51 acting through tie rod 58 and lever 59. Since the clutch may be of any known type it will not be described here in further detail.

The timing disk 52 is mounted against the flange 60 of a sleeve 6| and held in position by a Belleville spring 62. proper tension by a ring washer 63 over which the upper end of the sleeve BI is spun. Sleeve 6| is designed for rotation with the main shaft of a clockwork, while timing disk 52 is rotatable under friction relative to sleeve SI for setting purposes.

To check the friction pressure between the timing disk 52 and spring 62, the spinning tool is raised and the clutch parts 54, 55 engaged by pressing on treadle 51. Pinion 53 turns gear 43 and the entire upper rotatable unit. Stop 49 carries with it the timing disk 52 by engaging the finger 5| thereof. Due to its frictional engagement, disk 52 carries with it the sleeve BI and hence the entire rotatable unit, and moves the pointer of scale I, until the back force in scale I equals the friction between timing disk 52 and sleeve 6|. When these opposing forces are in equilibrium, the sleeve 6| will be held by the back force in the scale and the timing disk, under the urging of member 50 will continue to rotate around the sleeve 6|. Allowing for friction in the rotating parts of the machine, the reading of the scale I will give the friction between timing disk 52 and sleeve 6|.

In Figure 6 is shown a modification of the collet which is used when the timing disk assembly is spun directly to the clockwork shaft. The entire clockwork assembly is shown at 64 in dotted lines. Jaws 65 turning on pivots 66 are urged into holding position by the downward motion of Spring 62 is held under pin 61 engaging in slots 68 of the lower arms 69 of jaws 65 by means of flange 10. Spring ll aids in releasing the jaws. I2 is a central stop for handle 35. Stop 49 will, of course, extend to a greater height in this modification.

I claim:

1. A force measuring device comprising a fixed annular table having a flanged, inner periphery, a drum having an annular channel surrounding the flange of said table and journalled within the same, a work-holding member carried by said drum and extending through the central opening in said table, a rotatably mounted table on the side of said table opposite from said drum and journalled in the inner periphery of said table, an arm on said rotatably mounted table positioned for engagement with a portion of the work in the work-holding member, a driving member including a clutch and a driving connection between said driving member and said rotatably mounted table, a load-indicating device and a connection between the load-indicating device and the periphery of said drum.

2. A force measuring device comprising a fixed annular table, a rotatably mounted member on one side of said table, journalled therein and carrying a work-gripping element extending through the center thereof, a second rotatably mounted member on the other side of said table, journalled therein and carrying an arm for engagement with a portion of the workpiece in the work-gripping element whereby relative motion between portions of the workpiece may be occasioned by relative motion between said rotatably mounted members, means for said second rotatably mounted member including a clutch, a loadindicating device and connecting means between said load-indicating device and the first-mentioned rotatably mounted member.

AUGUSTO DE RENTIIS 

